纳米二氧化硅对水硬性石灰胶凝性能的影响

doi:10.19964/j.issn.1006-4990.2022-0552

Abstract

Abstract:

Natural hydraulic lime（NHL） is an inorganic adhesive material with both hydraulic and pneumatic，which is mainly used as binder for ancient building reinforcement and mural restoration.Low-grade NHL has problems such as cracking，poor water resistance，and Ca（OH）₂leaching because of its relatively slow hydration or reaction rate.The effect of the gas phase nano SiO₂（powder） on the physical properties and microscopic internal structure of the hydraulic lime was studied.Based on the characteristics of natural hydrated lime and nano SiO₂，adding nano SiO₂ to natural hydrated lime could improve the activity of NHL to increase the content of hydrated calcium silicate in gel materials without changing the original color of lime.The experimental studies showed that the addition of nano SiO₂ could increase the grade of NHL2 to NHL3.5 or even NHL5.Microanalysis of samples was conducted by using XRD，XRF，FT-IR，and SEM in the overall reaction.It was found that a large amount of calcium silicate gel material was generated in the natural hydraulic lime gel materials，which made the specimen structure compact，revealing the reason for the improvement of mechanical properties of natural hydraulic lime materials.

Key words: nano SiO₂, hydraulic lime, microscopic characterization, mechanical properties

CLC Number:

TQ127.2

WANG Yue, FANG Guoxiang, ZHANG Daoming, WANG Weicheng. Effect of nanosilica on gelling properties of hydraulic lime[J]. Inorganic Chemicals Industry, 2023, 55(7): 75-80.

Figures/Tables 13

Table 1

Fig.1

Table 2

Fig.2

Fig.3

Table 3

Fig.4

Fig.5

Fig.6

Table 4

Table 5

Fig.7

Fig.8

References 16

1	兰明章，聂松，王剑锋，等.古建筑修复用石灰基砂浆的研究进展［J］.材料导报，2019，33（9）：1512-1516.
	LAN Mingzhang， NIE Song， WANG Jianfeng，et al.A state-of-the-art review on lime-based mortars for restoration of ancient buildings［J］.Materials Reports，2019，33（9）：1512-1516.
2	COELHO G B A， ENTRADAS SILVA H， HENRIQUES F M A.Impact of climate change in cultural heritage：From energy consumption to artefacts′ conservation and building rehabilitation［J］.Energy and Buildings，2020，224：110250.
3	DEL CURTO D， CINIERI V.Aerogel-based plasters and energy efficiency of historic buildings.Literature review and guidelines for manufacturing specimens destined for thermal tests［J］.Sustainability，2020，12（22）：9457.
4	BRANCO F G， DE LURDES BELGAS M， MENDES C，et al.Characterization of fresh and durability properties of different lime mortars for being used as masonry coatings in the restoration of ancient constructions［J］.Sustainability，2021，13（9）：4909.
5	SILVA B A， FERREIRA PINTO A P， GOMES A.Natural hydraulic lime versus cement for blended lime mortars for restoration works［J］.Construction and Building Materials，2015，94：346-360.
6	APOSTOLOPOULOU M， BAKOLAS A， KOTSAINAS M.Mechanical and physical performance of natural hydraulic lime mortars［J］.Construction and Building Materials，2021，290：123272.
7	常青.世界遗产六问［J］.世界建筑，2019（11）：14，138.
	CHANG Qing.Six questions about heritage［J］.World Architecture，2019（11）：14，138.
8	LUO Kai， LI Jun， HAN Qing，et al.Influence of nano-SiO₂ and carbonation on the performance of natural hydraulic lime mortars［J］.Construction and Building Materials，2020，235：117411.
9	刘宁，王初生.纳米纤维路面混凝土配合比及耐久性实验研究［J］.无机盐工业，2020，52（10）：96-99.
	LIU Ning， WANG Chusheng.Experimental study on mix proportion and durability of nano fiber pavement concrete［J］.Inorganic Chemicals Industry，2020，52（10）：96-99.
10	张道明，王丽，郭国梁，等.冻融作用对古青砖宏观性能及微观结构劣化的影响［J］.文物保护与考古科学，2021，33（4）：9-15.
	ZHANG Daoming， WANG Li， GUO Guoliang，et al.Effect of the freeze-thaw on macroscopic properties and microstructural degradation of ancient grey bricks［J］.Sciences of Conservation and Archaeology，2021，33（4）：9-15.
11	REN Chunrong， HOU Li， LI Jun，et al.Preparation and properties of nanosilica-doped polycarboxylate superplasticizer［J］.Construction and Building Materials，2020，252：119037.
12	CHIDIAC S E， SHAFIKHANI M.Cement degree of hydration in mortar and concrete［J］.Journal of Thermal Analysis and Calorimetry，2019，138（3）：2305-2313.
13	LUO Kai， LI Jun， LU Zhongyuan，et al.Effect of nano-SiO₂ on early hydration of natural hydraulic lime［J］.Construction and Building Materials，2019，216：119-127.
14	LUO Kai， LI Jun， HAN Qing，et al.Influence of nano-SiO₂ and carbonation on the performance of natural hydraulic lime morta-
	rs［J］.Construction and Building Materials，2020，235：117411.
15	覃丽芳，曲波，史才军，等.钙硅比对铝硅酸盐凝胶形成与特性的影响［J］.材料导报，2020，34（12）：12057-12063.
	QIN Lifang， QU Bo， SHI Caijun，et al.Effect of Ca/Si ratio on the formation and characteristics of synthetic aluminosilicate hydrate gels［J］.Materials Reports，2020，34（12）：12057-12063.
16	郭传慧，魏建鹏，李巧玲，等.不同矿物掺合料在复合胶凝材料中水化特性的对比研究［J］.硅酸盐通报，2016，35（11）：3782-3789.
	GUO Chuanhui， WEI Jianpeng， LI Qiaoling，et al.Comparing study on hydration properties of various mineral admixtures in composite cementitious materials［J］.Bulletin of the Chinese Ceramic Society，2016，35（11）：3782-3789.

编号	w（NHL）/%	w（NS）/%
NS0	100	0
NS1	97	3
NS2	94	6
NS3	91	9

样品	养护龄期/d	w（CaO）/%	w（SiO₂）/%	n（Ca）/n（Si）
NHL2	0	76.0	9.57	8.51
NS0	7	73.0	12.6	6.21
NS0	28	70.8	13.1	5.79
NS1	7	68.7	17.3	4.25
NS1	28	66.7	17.8	4.01
NS3	7	62.2	25.3	2.63
NS3	28	54.9	32.4	1.82

衍射峰值/cm^-1	键型	成分
3 644	—OH	Ca（OH）₂
1 429、874、712	C—O	CaCO₃
516	Si—O	C₂S
968	Si—O—Si	C-S-H

[1]	LI Keke, XUE Jiangwei, WANG Luwei, GUAN Xuemao. Effect of MgAl-layered double hydroxides on properties of high-iron low-calcium portland cement [J]. Inorganic Chemicals Industry, 2024, 56(4): 57-63.
[2]	YU Zhou, HE Zhaoyi, TANG Liang, HE Sheng, XIAO Haixin, XIAO Yixun. Study on preparation and microscopic properties of typical sulfate solid waste composite cementitious materials [J]. Inorganic Chemicals Industry, 2024, 56(4): 90-97.
[3]	CUI Gengyin, XIE Lang, LU Yuexian, KONG Dewen, WANG Lingling. Optimization of mechanical properties of basalt fiber reinforced phosphogypsum-based composites based on RSM [J]. Inorganic Chemicals Industry, 2023, 55(8): 116-123.
[4]	XU Li, FANG Keneng, BI Yongxiang, YANG Min, CHEN Qianlin. Preparation of modified granular-like CaSO4 and its application in polyvinyl chloride [J]. Inorganic Chemicals Industry, 2023, 55(3): 104-112.
[5]	LIU Xueting, MAO Lingfeng, HU Yun, PENG Xi, FAN Xuemei, CHEN Yanlei, LIU Wenkui. Synergistic dispersion of SiO₂ by dispersant and supershear [J]. Inorganic Chemicals Industry, 2023, 55(3): 71-77.
[6]	ZHANG Yanru, REN Changzai, SONG Zhanlong, ZHU Jianjun, ZHAO Baofeng, XIE Hongzhang, WANG Zhenjiang, QI Xiaole. Study on performance of biomass power plant ash as alternative to cement clinker in blended cements [J]. Inorganic Chemicals Industry, 2023, 55(10): 128-135.
[7]	CHEN Mingsheng,LIU Peng,KONG Dewen,LI Yuan,YU Ke,HUANG Yansen,WU Ningbo,CHANG Juanjuan. Effect of external admixtures on mechanical and thermal conductivity of phosphogypsum composite cementitious materials [J]. Inorganic Chemicals Industry, 2022, 54(9): 113-118.
[8]	XU Lihua,HUANG Zheng,ZHANG Xing,DU Huaiming,CHEN Xiaochao,HUANG Bin. Preparation and properties of composite materials from natural gas?based acetylene process produced carbon black and silica [J]. Inorganic Chemicals Industry, 2022, 54(5): 121-125.
[9]	WANG Yuan,WANG Zhi,QIN Hongyi. Study on properties of wet detoxification Fe-Cr slag as concrete admixture [J]. Inorganic Chemicals Industry, 2022, 54(3): 87-90.
[10]	LÜ Fangtao,ZHOU Yinsheng,KONG Dewen,CHEN Sihan,AN Hongfang,WANG Lingling. Effect of hybrid fiber on properties of desulfurized gypsum based composite cementitious material [J]. Inorganic Chemicals Industry, 2022, 54(10): 127-132.
[11]	Liu Yuhong,Yin Chunlin,Ma Shunyou,Yan Xin,Yuan Xiaochao,Leng Jianjun,Zhang Jin. Preparation of colored zirconia ceramics by adding alumina-chrome slag from aluminothermic reduction [J]. Inorganic Chemicals Industry, 2021, 53(3): 78-83.
[12]	Wang Guosheng,Han Siyu,Tang Fengxiang,Xu Ronghui. Preparation and properties of modified basic magnesium chloride whisker/styrene butadiene rubber composites [J]. Inorganic Chemicals Industry, 2020, 52(3): 51-54.
[13]	Chen Peng,Zhang Chenhu,Wang Chengyong,Shi Kaiyi,Lei Yizhu. Research status of main properties of basalt fiber [J]. Inorganic Chemicals Industry, 2020, 52(10): 64-67.
[14]	WANG Na, ZHONG Jian-Chu, WANG Hong-Zhi. Preparation， characterization and application of calcium and aluminum layered double hydroxides intercalated by boric acid radical [J]. INORGANICCHEMICALSINDUSTRY, 2016, 48(1): 25-.
[15]	Ji Lianmin;Li Lijuan;Sun Qiuju;Nie Feng;Zeng Zhongm;Liu Zhiqi. Study on mechanical properties of ethylene-vinyl acetate (EVA) copolymer stuffed by magnesium hydroxides flame retardants [J]. INORGANICCHEMICALSINDUSTRY, 2008, 0(12): 0-0.

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Effect of nanosilica on gelling properties of hydraulic lime

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 13

References 16

Related Articles 15

Metrics

Comments

Recommended 0